Scottie Scheffler has shown exactly why he’s the world No 1 by refusing to blame his controversial arrest by Louisville police on his poor Saturday round that ultimately cost him a chance of winning the PGA Championship. The 27-year-old has been the standout star on the PGA Tour this year having won four events heading into the PGA Championship, including the Masters last month. He looked likely to be in contention once again for another major victory after an impressive first round. But his tournament took an unexpected and concerning turn in the early hours of Friday morning when he was arre…